Function plan 

pub fn plan(
    ctx: &Ctx,
    view: &View,
    pid: u32,
    front: FrontEnd,
    argv: Vec<Vec<u8>>,
    env: EnvSource,
) -> Result<ExecPlan, i32>

Plans a nested launch: the command of the nested command line, run in a view composed from the requester’s.

Arguments

• ctx - Shared supervisor state.
• view - The requester’s view.
• pid - Requesting tracee thread id.
• front - Dialect of the command line.
• argv - The tracee’s full argument vector (argv[0] is the program).
• env - The tracee’s environment.

Returns

A plan that always goes through the trampoline: for the real command, or to print a message on the tracee’s own stdout or stderr and exit.

Errors

Errno from reading the tracee.